Full-load passenger car body structure

Abstract

The present disclosure relates to a full-load passenger car body structure including a roof frame, a side wall frame, a rear frame and an underframe. The side wall frame is enclosed to form an accommodating space, the roof frame is disposed on an upper part of the side wall frame, and the underframe is disposed on a lower part of the side wall frame, where a plurality of reinforcing members are disposed on the underframe and used for reinforcing connection strength of the underframe. Therefore, the connection strength of the underframe is reinforced by disposing the plurality of reinforcing members on the underframe, thereby increasing the strength of the full-load passenger car body structure, and the structure is simple and light without reinforcement, so that the overall weight of the full-load passenger car body structure can be reduced while meeting the requirements for carrying capacity of the underframe.

What is claimed is: 
     
       1. A full-load passenger car body structure, comprising:
 a roof frame, 
 a side wall frame, 
 a rear frame, and 
 an underframe, 
 wherein the side wall frame is enclosed to form an accommodating space, the roof frame is disposed on an upper part of the side wall frame, and the underframe is disposed on a lower part of the side wall frame; 
 wherein the underframe is divided into a front section area, a front axle area, a middle section area and a rear axle area from front to back, and 
 wherein a plurality of reinforcing members are disposed on the underframe and used for reinforcing connection strength of the underframe; wherein:
 the underframe comprises two main longitudinal beams and a plurality of transverse beams, 
 the plurality of transverse beams are disposed perpendicularly to the main longitudinal beams respectively, and 
 the reinforcing members are overlapped at joints between the transverse beams and the main longitudinal beams. 
 
 
     
     
       2. The full-load passenger car body structure according to  claim 1 , wherein:
 the middle section area comprises two first longitudinal beams and a plurality of first transverse beams, 
 the plurality of first transverse beams extend between the two first longitudinal beams and are disposed perpendicularly to the first longitudinal beams respectively, 
 first and second ends of the plurality of first transverse beams are connected to the side wall frame, and 
 first diagonal tie bars are disposed in a space enclosed by the two first longitudinal beams and the plurality of first transverse beams. 
 
     
     
       3. The full-load passenger car body structure according to  claim 2 , wherein:
 the rear axle area comprises two second longitudinal beams and a plurality of second transverse beams, 
 the plurality of second transverse beams are disposed outside the second longitudinal beams, disposed perpendicularly to the second longitudinal beams respectively, and connected at opposite positions of the two second longitudinal beams respectively, 
 the reinforcing members comprise longitudinal bars that are disposed between the two second longitudinal beams, and 
 first and second ends of the longitudinal bars are connected to the rear axle area and the middle section area respectively. 
 
     
     
       4. The full-load passenger car body structure according to  claim 3 , wherein:
 a first end of the rear axle area is connected to the first transverse beam at one end of the middle section area, and a second end of the rear axle area is connected to the rear frame; and 
 wherein connecting rods are disposed at the second end of the rear axle area and connected to the two second longitudinal beams, the rear frame and one end of the reinforcing members respectively. 
 
     
     
       5. The full-load passenger car body structure according to  claim 4 , wherein:
 two second diagonal tie bars are disposed on the two second longitudinal beams at the second end of the rear axle area respectively, and 
 the second diagonal tie bars are connected to the second longitudinal beams and the rear frame respectively. 
 
     
     
       6. The full-load passenger car body structure according to  claim 3 , wherein the two first longitudinal beams are integrally connected or detachably connected to the two second longitudinal beams respectively to form the main longitudinal beams. 
     
     
       7. The full-load passenger car body structure according to  claim 3 , wherein:
 the reinforcing members comprise first reinforcing members and second reinforcing members; and wherein: 
 the first reinforcing members are disposed at joints between the first longitudinal beams and the first transverse beams and joints between the second longitudinal beams and the second transverse beams; 
 the first reinforcing members comprise third diagonal tie bars; and 
 the second reinforcing members further comprise two longitudinal bars and a plurality of crossbars, and the plurality of crossbars are disposed at intervals and connected perpendicularly to the longitudinal bars respectively. 
 
     
     
       8. The full-load passenger car body structure according to  claim 7 , wherein:
 the two longitudinal bars are disposed in parallel, and 
 the plurality of crossbars are disposed in parallel at an equal interval. 
 
     
     
       9. The full-load passenger car body structure according to  claim 3 , wherein the rear axle area comprises two rear axle supports enclosed by the two second longitudinal beams and the plurality of second transverse beams.